Padres fall to Lackey, 4-1

San Diego Padres starting pitcher Robbie Erlin delivers to the Boston Red Sox during the first inning of an interleague baseball game at Fenway Park in Boston, Tuesday, July 2, 2013. (AP Photo/Elise Amendola)
— AP

San Diego Padres starting pitcher Robbie Erlin delivers to the Boston Red Sox during the first inning of an interleague baseball game at Fenway Park in Boston, Tuesday, July 2, 2013. (AP Photo/Elise Amendola)
/ AP

"Honestly, I felt like I was one pitch away the entire time until that last pitch," Erlin said. "I tried to go inside, left it belt-high over the plate, and he hit it off the wall."

Lackey needed only six pitches to get out of the sixth inning before Guzman spoiled the shutout bid in the seventh with a shot off the top of the Green Monster. The umpires held Guzman at second briefly before conferring and ruling it was a homer without going to video replay. Boston fans booed the call, but replays showed it was correct.

Ortiz hit his 500th career double in the first and Jose Iglesias added an RBI single in the sixth for Boston.

NOTES: The fifth all-time series between the Padres and Red Sox continues Wednesday with RHP Edinson Volquez (6-6) starting for San Diego against Jon Lester (8-4). ... Ortiz became the 58th major leaguer to hit 500 doubles and the fifth active player to do so. ... Snyder was called up from Triple-A Pawtucket the previous week and had two RBIs entering the game. ... Boston CF Jacoby Ellsbury extended his hitting streak to 12 games. ... Red Sox 2B Dustin Pedroia has reached base safely in 43 of 45 home games this season. ... San Diego SS Pedro Ciriaco returned to Fenway Park for the first time since being acquired by the Padres on June 14 for cash, and got a quiet but warm round of applause in his first at-bat.